Stop mechanism for yarn twisting and winding machines



G. H. SIMONSON ET AL Feb. 16, 1932.

STOP MECHANISM FOR YARN TWISTING AND WINDING MACHINES 1950 3 Sheets-Sheet Filed Dec. 18

INVENTORS Feb. 16, 9 G. H. SIMONSON ET AL 1,845,565

STOP MECHANISM FOR YARN TWISTING AND WINDING MACHINES Filed Dec. 18, 1930 3 Sheets-Sheet 2 IM- gifiiii BY Arrow Feb. 16, 1932. G. H. SIMONSON ET AL 1,845,565

STOP MECHANISM FOR YARN TWISTING AND WINDING MACHINES Filed Dec. 18, 1950 3 Sheets-Sheet 5 IN VENT 0R5 Patented Feb. 16, 1932 1 UNITED STATES PATENT OFFICE GEORGE E. SIMONSON, OF SPRINGFIELD, AND IBANKJV. GRENNOR, OIB CHICOPEE,

-MASSACHUSETTS ASSIGNOBS TO .BIGELOW-SANFORD CARPET CO. INC., OF THOMP- SONVILLE, CONNECTICUT, A CORPORATION OF MASSACHUSETTS s'ror Kncmrsm r03. YARN TWISTING AND WINDING moms.

This invention relates to yarn winding machines for doubling. and twisting yarns,

- and more particularly to stop mechanism for breaks. L

While the stop mechanism of these PIIOI',

of the yarns being twisted together asthey' package and operable to stop the winding devices work satisfactorily when a single yarn is being wound upon a package, they are. not adapted for use where two or more yarns are being twisted together as the are supplied to the package, since these prior devices will stop the winding operation only in case all the yarns break and'not when a single yarn breaks. This is objectionable for if the winding operation continues after one yarn breaks, a single yarn, or yarns of less than the desired number of ends will be wound on the package.

An important feature of the present invention resides in mechanism controlled by each are delivered 'fr'oni bobbins to a winding,

operation upon the breakage of a single yarn. The construction is such that when one'yarn breaks the winding operation'will stop while the other yarn or yarns supplied to thepack age remain intact. This is. highly deslrable since in piecing up it is necessary to tie togetheronly the ends of the one broken yarn, and the knot thus'produced is so small that it will not be noticeable in the, multiply twisted yarn, whereas if all'th'e strands of the multiply yarn are broken, an objectionable large knotis produced in tyingthese several ends together.

Another important feature of the inven: tion resides in latch means for controlling the winding operation, and in latch actuators carried by the spindle-that-rotate the yarn :npply bobbins and which are adapted to be heldinactive by the running yarns, but are -AppliceLtion filed December 18, 1330.. Serial No. 503,132.

' Winding machines have been provided.

constructed and arranged to sto the winding operation when any one o the yarns break.

A further-feature of the invbntionresides in mechanism for automatically resetting the latch means after it has been actuated to stop the winding operation, and still. a further feature of the invention resides in power'aQ- tuated means controlled by each, yarn for stopping the rotation of the bobbins and the rotation of the yarn receiving package when a yarn breaks, or supply'package runs out.

Other features of 'the mventlon and novel combination of parts in addition to the above will be hereinafter described in connection with the accompanying drawings,

the invention.

In the drawings 1 Fig. 1 is an end view of a yarn winding machine constructed in accordance with the present invention.

Fig. 2 on. a larger scale is a front view of an end portion of the machine of Fig. 1 showing one group of yarn doubling and twistingunits.

. Fig. 3,'on a still larger scale is a erspective view of stopping mechanism or con-: trolling one twisting and winding unit, and

'Fig. 4 is a vertical sectional view throu h latch means and cooperating parts to be escribed.' V

The operating parts of a winding machineprovided with the novel features of the present invention are supported at the desired height from the floor by any suitable frame, and such frame is shown as. having the uprights 10 and 11 connected by the transverse- 1y extendin beams 12 and to these uprights are secure the longitudinally extending rails 13, 14 and 15. To thempper portion of each end frame is secured an end plate 16 adapted to support the yarn receiving package and other mechanism to be described.

The frame of the present winding machine may be made long enough to support any desired number of yarn twisting and which illustrate one good practical'form of I,

doubling units suchas shown in Figs.,2 and 3 of the drawings. Each of these units comprises a rotating spindle 17 mounted in a bearing 18, clamped or otherwise secured to a spindle supporting rail 19. Upon each' spindle 17, in the construction shown, is rigidly secured a pulley or whirl 20, adapted to be driven by a belt 21 which in turn is driven from a pulley 22 secured to the main or power shaft 23. Each spindle 17 has a pprtion 24 which extends upwardly thereom some distance above the pulley 29 and upon this upper portion 24 of the spindle is journaled and slidably mounted the bobbin supportingdisc 25. This disc has the reduced downwardly extending portion 26 forminga clutch member adapted to engage a cooperating clutch member secured to the spindle 17 v or; its pulley 20. This clutch.

mechanism may be of well known construction and the arrangement is such that/the weight of the bobbin supporting disc 25 and parts carried thereby are relied upon to hold the clutch member 26 in frictional engage ment with the clutch member of the spindle 17 when it is desired to drive the disc 25 from the spindle 17. The disc 25 may be provided with any desired number of bobbin carriers 27, two being shown in the drawrugs, and upon each of these carriers is mounted a bobbin 28.

tending shaft 33and the bracket '32 is provided with the downwardly extending arm The construction is such that the yarn receiving package 29 rests under the influence of its own weight upon the driving roll 35 and the package and its supporting shaft 30 moves upwardly as the size of the package 29 increases.

secured to the operating shaft 36 which is driven from the main power'shaft23 by the chain or belt 37. The desired traversing movement is imparted to the doubled and twisted yarns a as they are delivered to the package 29 by the traversing guide 38 which may be operated in a well known manner from the traversing cam or slotted drum 39,

1 which is rigidly secured to androtated by the shafti 40. The shaft 40 in the construction shown is driven. by the belt 41 that is 0 rated by. the rear shaft 42 and this rear aft is driven' from the lower or power shaft 23 b the belt 43. The roll 35 and drum 39 0 viously, however, may be driven by other means.

It will be ap arentflfoln-the construction so far descnbe that when the spindle is end 0 operated to rotate the bobbinsupporting disc' 25 and the bobbins'carried thereby, the yarns a will be twisted together as they pass upwardly from the supply bobbins 28 to the yarn receiving package 29. 1 e

In some cases it is desirable to provide means for firmly engaging the twisted yarns a at a point between the supply bobbins 28 and the yarn receiving package 29 to deter-,

for movement towards and from the lower 2 roll 44. The lower roll 44maybe driven from the shaft 36' by the belt ,48 and the upper roll 45 is driven by its friction engagement with the roll 44 or the yarn pass ingbetween these rolls. i

As above stated an important feature of the present invention resides in stop mechanism for stopping the winding operation when any one of. the yarns a breakand one novel form of mechanism to this end will now be described.

In the embodiment of the invention illustrated a hook supporting lever 49, which is pivotally secured at to the machine frame is positioned below the roll 44 for swinging movement and to the outer end of the lever 49 is pivotally secured the drop-hook 51. This hook is pivoted'to the lever 49 at 52 and is provided with the inwardly extending arm 53. The lever 49 is shown as also provided with the yarn guide 54 extending from its outer end andadapted to guide the yarns to the nip of the rolls 44 and 45.

. The hook supporting lever 49 is normally held in-the raised or yarn winding position in which it is shown in Fig. 1 by a spring 55,

the arrangement being such that when this The roll 35 in the construction shown is lever 49-is rocked downwardly, either by hand or by actuating means to be described, it will be retainedin its lowered position byan ofiset portion of the sprin'g55. The lever 49 is-provided with the upwardly extending arm 56 adapted to support the package elevating rod 57 The rear end of this rod is pivotally connected at 58 to the-downwardly extending arm 34 and is provided at its forward end with the handle 59 adapted to be grasped when it is desired to raise or lower the package 29v manually, by'rocking its supporting bracket 32, The lower face of the rod 57 is provided with a series of notches as shown in Fig. 1 and adapted to enga e the upper he supporting lever. 56. he arrangementis such that when the hook sup orting lever 49' ismoved'downwardly from-t e posi-.

tion in which it shown in 1 the rod 57 will be pulled frontwardly by the rock ing movement of the arm 56 to lift the package 29 out of engagement with its driving roller to stop .the rotation ofthi's package.

Itis important to provide means for automatically lowering the hook supporting lever 49 when a yarn breaks, to stop the winding operation. This is accomplished in the embodiment of the invention shown bypositioning the drop-hook 51 so that it is normally held out of the path of a vibrator or oscillating sector 60, rigidl secured to its operating shaft 61 and roc ing movement is imparted to the shaft 61 1n the construction shown by a link 62, one end of which is pivotally secured to an arm 63 operatively connected to the shaft 61 and the opposite end of the link 62 is pivotally secured to a disc 64. This disc is secured to the shaft 65 which is driven from the shaft by the cooperating gears 66 and 67.

The drop-hook 51 in the construction shown, is continuously urged into position to be engaged by the vibrator by a light spring 68, and the hook 51 is held in the position in WhlCh it is shown in Fig. 1 during the normal operation of the machine by the rod 69 which is provided at its upper end with an adjustable nut 70, adapted to cooperate with the arm 53. The arrangement is such that when one of the yarns a break the hook controlling rod 69 is raised by mechanism to be described, whereupon the hook 51 is permitted to swing inwardly into position to be engaged and pulled downwardly by the vibrator 60 to cause this vibrator to pull the' lever 49 downwardly and stop the rotation of the package 29. as above pointedout.

When the winding operation of the package 29 is stopped the rotation of the bobbins 24, by the spindle 17, should also be arrested and this is accomplished by providing means for disengaging the clutch elements, above described, as provided between the bobbin supporting disc 25and' whirl 20. This friction clutch is controlled in the construction shown by providing a ring 71 that loosely surrounds the upper portion of the whirl 20, and this ring is pivotally secured at 72 to the bifurcated arms of the operating lever 73. The bifurcated ends of the lever 73 are pivotally secured at 74 to a bracket 75' supported by the rail 19. The arrangement is such that when the lever 73 is rocked upwardly it will raise the ring 71 to cause this ring to elevate the disc25 out of engagement with the clutch element of the whirl 20 and at the same time the frictional engagement ofthe ring'71 with the portion 26 of the disc 25 will quickly check the rotation of this disc.

is controlled from the hook supporting lever 49 by providing the sliding rod 76 which is supported for vertical sliding movement by the fixed brackets 77 and-7 8. The upper end of the rod 76 connected to the outer end of the lever 49 by thelink 79 and the lower end of the rod 76 is connected to the lever 73 by the sprocket chain 80, an intermediate portion of which asses about the sprocket 81, best shown in ig. 3. The arrangement is such that when the lever 49 is rocked downwardly to lift'the package 29 out of engagement with its driving roller 35 the clutch 7 operating lever73 is elevated to stopv the rotation ofthe bobbins 28.

' An extremely'important feature of the present'invention resides inmeans for stop,

ping the winding operation when any one of the yarns a breaks and while the other yarns it remain intact. This is accomplished in accordance with the presentinvention by rlgidly securing to the bobbin supporting disc 25 an upwardly extending post 82, the lower formed of porcelain orother suitable material. Upon the upper face of-the platen 8.3

in the construction shown, are provided the bifurcated blocks 86, one for each yarn a, and the arms of each block are provided with the yarn guides 87, 88, one of these guides being provided with a vertically d sposed slot, andthe other with a horizontal slot, as

shown. so thatthe yarn may be readily introduced in these guides and will be prevented from escaping therefrom by the angle at which these slots are disposed to each other.

Cooperating with each bifurcated block 86 is a pivot-ed latch-actuator 89, the arrangement beng such that each latch is held in the elevated, positipn in which it is shown in Fig.

3 by the tension of the running yarn a.- When a yarn-breaks the latch controlled "thereby will move downwardly under the influence of gravity and centrifugal force into the path of a projection 90- adjustably secured to an arm 91 extending laterally from a sleeve 92 that slidably receivesthe rod 76. the arrangement be ng such that the-arm 91 and sleeve 92 constitute a latch that is supported for turning and sliding movement. The outer end of the projection 90 is preferably beveled as shown.

Thesleeve 92 is slidably mounted in the bracket 78 and. is continuously urged upwardly by ai coil'cd' spring 93 confined in the lower portion of the hollow bracket 78 and the tension of this spring may be adjusted by rotating the adjustable nut 94. The sleeve 92. i

is normally held in its lowered position in which it is shown in each view by the engagement of a notch 95 formed in this sleeve with apin 96 which is rigidly secured to and projects inwardly from a side wall of the hollow bracket 7 8. The spring 93 not only continuously urges the sleeve 92 upwardly but also tends to rotate this sleeve in a direction to engage its notch 95 with the pin 96.

' However, it' maybe desirable in some cases to employ one spring to urge the sleeve 92 upwardly and a second spring to rotate the sleeve. y

The construct on just described-is such that during the normal winding operation of the present machine the platen 83 will be rotated with the bobbin supporting disc 25 in the direction indicated by. the arrow'in Fig. 3, and when one of the yarns a break the latch actuator 89 controlled thereby will move downwardly into position to strike the portion 90 of the spring actuator latch to'release this igo-latch and cause'it to move upwardly under the action of the compressed spring 93. The upward movement of the sleeve 92 relative to -the rod 6 is-imparted to the hook controlling rod 69 by the key link 97 mounted in a slot in the rod 76 and the upper end of which link is secured to the lower end of the rod 69, as shown. The lower end of this link is provided with the lateral projection 98 thatlies withinan arcuate slot 99 formed in a wall of the sleeve 92. The upward movement of the sleeve 92 acts through the key link 97 to elevate the rod 69 sufiiciently to permit the drophook5l to move under the action of its spring into the path of the, vibrator 60, whereupon the hook support ng lever 49 is pulled downwardly and a s milar downward movement is imparted to the sliding rod 76 through the connecting link 79 to cause the rod 76 toactuate the lever 73 to stop the rotation of the bobbins 24. The downward movement of providing the rod 7 6 with a pin or stop 100 to limit the sliding movement ofthe key 97 v in the keyway formedinthe rod 76 so that the downward movement of the rod 76 will engage the pin 100 with the upper end of the kev link 97. This serves to force the sleeve 92 downwardly suificiently to bring its notch 95 'tionof the package 29 and also the rotation of the bobbins 24 to impart the desired twists to the yarns a at a point between the platen I 83 and. the n p of the rolls 44 and 45. Since the lower roll 44 is power driven it is desirable to stop the rotation of the same when a ya'rn breaks and the spring actuated latch it tripped; This is accomplished in the construction shown by providing the pulley 101 mounted upon the shaft 36 to drive the belt 48, with the friction driving clutch or cone the rod 76 serves also to reset the spring actu-v ating latch 91, 92. 'This'is accomplished by opposite the p n 96,.whereup0n the notch will.

6 102 adaptedto'be actuated by the bell crank lever 103 which is pivoted at 104 and one arm of the lever 103 is connected by-a link 105 to the hook supporting lever 49. The arrangement is such that when the lever 49' is lowered in the manner above described the cone clutch 102 will be actuated by the'o'nnections just described to stop the rotation of the pulley 101.

In some cases it may be desirable to provide means for holding the drop-hook 51 out of the path ofthe vibrator after the book. has been'once engaged and lowered by this vibrator to stop the winding operation, the purpose beingto eliminate excess wear of the hook and vibrator. This is accomplished in the construction shown by providing the spring actuated plunger 106 which is slidably mounted in the supporting birficket 107 carried by the beam 15. 'The rangement is s uch that when the lever 49 is in its upper position the plunger 106' will not prevent the drop-hook 51 from moving into the pathof the vibrator 60, but when this lever 49 is rocked downwardly to stop the winding operation the book 51 will be inoved bodily towards the plunger ,106 and this will cause After the endspf the-broken yarn a have been tied together the winding operation may be resumed by manually swinging the hook supporting lever 49 upwardly to the position in whi'chdt is shown in Fig. 1, as this will serve to lower the package 29 into engagement with its drive roller 35 and at the same time will actuate the clutch controlled by the lever 7 3- to' drive the bobbins 28 from the spindle 17. V

Through the employment of the present invention two or more yarns a may be twisted together as they are delivered directly from the bobbins 28 to a'package 29 having a con-' venient size for use in a cre'el, and since the stop mechanism of .thepresent invention operates to stop the winding operation when any one of the yarns break, without causing the breakage of the remaining yarns, the ends of' the single broken yam may be easily tied together, and the knot thus formed will not be noticeable in the finished twisted yarns.

What is claimed is 2-- y 1. In a doubling and twisting machine,

'comb ination of a yarn package holder, means the shifting the'hook, means rotatable with said' spindle and controlled by the yarn being wound upon said package for effecting engagement of the hook and vibrator to shift yarn supplied by a bobbin and including latch operators rotated .by said spindle, and a spring operated latch having a part positioned to beengaged by a latch operator and adapted to be shifted bythe spring out of the ath of the latch operator as soon as the latch .-1s released by a latch operator.

3. In a doubling and twisting machine, the combination of a arn package holder, means for rotating 2. pac age supported by the hold er to wind yarn thereon, a spindle provided with bobbin carriers, power means for drivlivered from the bobbins to the package, and stop mechanism under the control of each yarn supplied by a. bobbin and including yarn-controlled latchoperators rotated by said spindle, alatch positioned to be struck and released by a latch operatorwhen a yarn breaks, and a'spring operable to shift the released latch to stop the twisting and winding operation and to hold the released latch out 'o the 'path of the latch operator.

4. In a doubling and combination of a arn package holder, means ,for rotating a pac age supported by the hol or to wind yarn thereon, a s'pindle provided with bobbin carriers, power means for driv' 9 ing the spindle to twist the. yarns delivered from the bobbins to the package, a spring operated latch oper ble to stop the rotation ofthe package and obbins, means for holding the latch in the spring tensioning position, a latch o rator rotated by said spmdle,

and controlle bya yarn to release the latch for movementb its spring to stop the'winding operation w en a'yarn breaks, and power actuated means, for resetting the released 1atch Y v 5. In a doubling and twisting machine,the V combination of a yarn package holder, m eans forwindi'ng yarn on a package supported by the holder,- a spindle provided with bobbin carriers, power means for driving the spindle to twist the yarns delivered from the bobbins to the package, latch means operable tostop the rotation of the bobbins, latch operators carried by the rotating spindle and adapted to engage and-shiit the latch means 1 and controlled by the*yarns.to actuate'the latch means when a yarn breaks, and spring meansformoving the latch means when once actuated outof the path of the latch operator. 6. .In a doubling and twisting machine,

ing the spindle to twist together yarns de twisting machine, the? the combination of a yarn package holder, means for winding yarn on a package carried by the holder, a spindle provided with bobbin carriers, power means for driving the spindle to twist the yarns delivered from the bobbins to the package, and stop mechanism under the control of each yarn and operable upon the breakage of a yarn to stop the twist- I ing and winding operation while the other yarns remain intact, includin a drop-hook,

a vibrator for shifting the hoo latch means adapted to be released when a yarn breaks and means operable by the shifting of said "hook to reset said latch means. I

7 In a yarn winding machine, the combia nation of means for winding yarn on a package, a bobbin supporting spindle, power means for driving the spindle, stop mechanism under the'control of the yarn for stopping the Winding operationwhen the am breaks includin latch means, a dropook controlled there y, a vibrator for shifting the hook, a latch atua-tor'carried by the rotating spindle and adapted to release the latch means when the yarn breaks, and means operable by the shifting of said hook to reset the latch means. 4 I 8. In a yarn winding machine, the combination of means for winding yarn on a package, a bobbin supporting spindle, power means for driving the spindle, stop mechanism under the control of the yarn for stopping the winding operation when the yarnreaks, including a spring actuated latch normally held in its retracted position, a drop-hook controlled by said latch, a vibrator for-shifting the hook, a latch actuator carried by the rotating spindle to release the latch when the yarn breaks,-and' means operable by the shifting of said hook to reset the latch. j a b 9. In a yarn winding machine, the combination of meansfor winding yarn on a pack- .age, ,a bobbin supporting spindle, power means for driving the spindle, clutch means for driving the bobbins from the spindle, stop mechanism under the control of the yarn for stopping the windingoperation when the v yarn breaks, including a latch, a -drophook controlled thereby, a vibrator for shifting the hook, a latch actuator carried by theqrotati'ng spindle and adapted to release the latch means when the yarn breaks, and means operable by the shifting of said hook to stop the rotation of said package, disen gage said clutch and reset the latch means. 10.'In-a yarn winding machine, the combination' of means for winding yam on a package, a bobbin supporting spindle, power means for driving the spindle, stop mechanism under the control of the yarn for stoping the winding operation when the yarn reaks, including a latch,,a drop-hook con trolled thereby, a vibrator for shifting the hook, and a latch actuator carried by the ro- "'tating spindle to be moved outwardly under the influence of centrifugal force and adapted to release said latch when the yarn breaks.

11. Ina yarn winding machine, the com- 5 bination of means for winding yarn on a package, a bobbin supportin spindle, power means for driving the spin le, stop mechanism under the control ofthe yarn for stoping the winding operation when'the yarn Y Breaks, including a latch, a drop-hook controlled thereby, a vibrator for shifting the hook, latch actuators carried by the rotating I spindle and each adapted to be held by a runnmg yarn out of engagement with said latch and constructed to move into position to actuate the latch when the yarn breaks.

12. In a yarn .winding machine, the combination of means for winding yarn on a package, a bobbin supporting spindle, power means .for .driving the spindle to twist the yarns delivered from the bobbins to the package, stop mechanism under the control of the 1 yarn for stopping the winding operation when a yarn breaks, including a latch, a latch actuator rotated by the spindle and operable to release said latch when a yarn breaks, and

. power actuated'means for automatically reing the latch in the spring tensioned position,

winding operation.

a latch actuator rotated by the spindle and operable'to release said latch when a yarn breaks, and means for automatically resetting the latch'after it has been actuated to stop the 14. In a doubling and twistin machine, the combination'of a yarn packageliolder, means for winding'yarn on-a packa e supported by the holder, a spindle rovi ed with bobbin earners, ower means Ebr driving the spindle to twist t e yarns delivered from the bobbins the package, and yarn controlled mechamsm for stopping the winding operation when the am 'reaks, including a drop-hook controlle b the yarn, a vibrator for shifting the hook an means for moving the hook out of the path-of the vibrator after one engagement by the vibrator, In testimony whereof, we have signedour 60. names to this specificatlon;

' GEORGE, H. SIMONSON.

FRANK V. GRENNOR. 

